Abstract: A child vehicle includes a power mechanism having a motor, at least one wheel selectively operatively coupled to the motor, and a propulsion switch coupled to the power mechanism and having a first position and a second position. The first position is from a user-initiated force. The propulsion switch automatically moves to the second position upon disengagement of the force. In the first position, the child vehicle is in the first operational mode and the wheel is being driven by the motor. In the second position, the child vehicle is in the second operational mode and the wheel is allowed to rotate substantially free from drag or resistance due to the motor. A method is also disclosed.

Abstract: A two-wheeled vehicle includes a frame assembly having a front end and a rear end extending along a longitudinally-extending centerline, a front ground-engaging member operably coupled to the front end of the frame assembly at a front rotational axis, and a rear ground-engaging member operably coupled to the rear end of the frame assembly at a rear rotational axis. A wheel base is defined between the front and rear rotational axes and a vertically-extending centerline of the vehicle extends vertically at the midpoint of the wheel base and is perpendicular to the longitudinally-extending centerline. The vehicle also includes a fuel tank, an airbox assembly, and a battery all positioned relative to the vertically-extending centerline of the vehicle.

Abstract: An upper coupler for a semi-trailer has a generally planar bottom plate. A kingpin attaches thereto to couple with a fifth wheel of a tractor. A reinforcement member extends across a width of the bottom plate to reduce bending of the bottom plate as it rests on the fifth wheel of the tractor. Along the reinforcement member's length, the reinforcement member has varying second moments of area taken in cross sections perpendicular to the reinforcement member's length.

Abstract: A shock absorber includes a cylinder including a working chamber therein; a rod configured to be axially movably inserted into the cylinder; and a plurality of tanks configured to be integrally attached to the cylinder, wherein an interior of one of the tanks is comparted into a liquid chamber configured to be communicated with the working chamber and filled with liquid and an air chamber filled with gas, and a sub-air chamber configured to be communicated with the air chamber is formed in the other tank.

Abstract: A power-assisted steering assembly for a vehicle comprises: a motor shaft for transmitting torque from a motor; a steering rack; a primary transmission mechanism; a secondary transmission mechanism; a motor coupling; and a rack coupling. The primary transmission mechanism is configured to transmit power from the motor shaft to the steering rack and includes a drive belt. The secondary transmission mechanism is configured to transmit power from the motor shaft to the steering rack upon a failure of the primary transmission mechanism. The motor coupling is configured to transmit power from the motor shaft to the primary transmission mechanism and the secondary transmission mechanism. The rack coupling is configured to transmit power from the primary transmission mechanism and the secondary transmission mechanism to the steering rack.

Abstract: A tow bar includes a shank. The proximal end of the shank is shaped and sized to releasably connect to a hitch receiver. The tow bar includes a first pivot coupler and second pivot coupler. The first pivot coupler preferably includes a first clevis rotatably connected to the distal end of the shank and connects the distal end of the shank to the proximal end of a pivot bar. The second pivot coupler connects the distal end of the pivot bar to a yoke having a proximal bracket and a distal bracket. A pair of arms connects to the distal bracket. Each arm is connected at its proximal end to the distal bracket via one of two third pivot couplers. Each third pivot coupler allows its connected arm to pivot in a substantially horizontal plane. Each third pivot coupler preferably includes a heim joint located at the proximal end of each arm.

Abstract: An apparatus for facilitating user propulsion of a wheelchair having a frame for supporting a user and a pair of rear wheels that rotate about an axis. The apparatus includes a handgrip having an outer surface and an opposite, inner surface such that when a radial force relative to the axis is applied to the outer surface by the user the inner surface is configured to engage a rear wheel in the pair of rear wheels such that the rear wheel can be rotated and the wheelchair propelled. A pair of coupling members configured to couple the handgrip to the frame and hold the handgrip in a neutral position, and the pair of coupling members are further configured to alternately increase in length and become tensioned as the user moves the handgrip away from the neutral position to rotate the wheel.

Abstract: The present invention relates to a bicycle driving apparatus with a novel structure which allows a bicycle to move forward by alternately pushing each of both pedals in one direction. Since a user repeatedly presses down a left pedal (113) and a right pedal (114) to move a bicycle forward, the bicycle driving apparatus according to the present invention has an advantage of more convenience of use than a conventional bicycle driving apparatus in which the left pedal (113) and the right pedal (114) should rotate.

Abstract: The assembly of motor scooters has not yet been sufficiently solved. According to the invention, the object is achieved by a seat assembly (70), in particular a battery assembly (70), for a motor vehicle (10), comprising: a frame (21), in particular comprising a battery housing (21); a saddle (20) arranged on the frame (21) and detachably connected to the frame (21) by a securing element; a compartment (150, 150?) having a drawer (152) arranged extendible within the compartment (150, 150?), wherein: the securing element is adapted to: release the saddle (20) in a release position; and secure the saddle (20) in an anchoring position, wherein the securing element is arranged and adapted such that the securing element is actuated and/or released when the drawer (152) is pulled out.

Abstract: A track system for a vehicle has an attachment assembly mountable to a chassis of a vehicle and defining an attachment-assembly-pivotable connector pivot axis; a track assembly including a support frame disposed laterally outward from the attachment assembly, the support frame including a leading frame assembly and a trailing frame assembly, each frame assembly including a frame member connectable to the attachment assembly pivotable connector and a frame-suspension pivotable connector; at least one wheel-load-bearing connector, and at least one idler wheel being at least indirectly connected to the frame member via the at least one wheel-load-bearing connector. The track system further has a sprocket wheel, an endless track, and a suspension assembly having a forward suspension pivotable connector, a rearward suspension pivotable connector, and a suspension member operatively connected to the forward suspension pivotable connector and to the rearward suspension pivotable connector.

Abstract: Disclosed is a gearbox having a central shaft (1), which is rotatably mounted relative to a stationary frame element (2) by means of at least one central shaft bearing (3), a first sun gear (4a) arranged concentrically around the central shaft (1) and fixedly secured to the frame element (2), a power transmission means (5) that is fixed in relation to the central shaft (1), and at least one first gearbox assembly (6a) rotating relative to the frame element (2) and comprising: a support plate (7), the first section (7a) of which is non-rotatably connected to the central shaft (1) and on the second section (7b) of which a planetary gear (8) is mounted by means of a planetary gear bearing (9), wherein the planetary gear (8) meshes with the first sun gear (4a) and a crank arm (10) engages rigidly with the planetary gear (8); and a driving crank (11), on which the crank arm (10) is hingedly mounted by means of a driving crank-crank arm bearing (12) and which is supported relative to the support plate (7) by means

Abstract: A stair traversing device comprising a payload body for transporting a payload, a step frame, and a mechanism between the step frame and the payload body to move the step frame relative to the payload body along a cyclical path. The mechanism drives a movement of one of the payload body and the step frame along a first segment of the cyclical path from a retracted configuration to an extended configuration, and drives a movement of the other one of the payload body and the step frame along a second segment of the cyclical path back into the retracted configuration. The payload body and the step frame are configured to remain fixedly in position on a stair when the other one of the payload body and the step frame is moved. The mechanism is configured to maintain the relative orientation between the payload body and the stair.

Abstract: The invention relates to a strain wave gear, having an outer ring with an inner toothing, with which a flexible inner ring with an outer toothing engages at two opposing points. The strain wave gear is characterized in that the ratio of the pitch diameter of the outer ring to the rim thickness of the outer ring lies in the region of 13 to 21, especially in the region of 17 to 19, especially at 17.587, wherein the teeth of the toothing of the inner ring have a profile angle in the region of 8 degrees to 15 degrees or in the region of 11 degrees to 12 degrees or one of 11.615 degrees, and/or wherein the teeth of the toothing of the outer ring have a profile angle in the region of 8 degrees to 15 degrees or in the region of 11 degrees to 13 degrees or one of 12.474 degrees.

Abstract: A hydraulic shock absorber includes a control valve. The control valve includes a valve seat formed with a closing face, a valve body configured to come into contact with the closing face, and a valve shaft configured to transmit an operation force applied from a driving unit to the valve body. The control valve is defined with an upstream side flow channel extending from an inlet coupled to the upper end opening, via a space in which the valve body moves, to the closing face, and a downstream side flow channel extending from the closing face to an outlet. The control valve is disposed above the cylinder so that a central axis of the valve shaft is inclined relative to a central axis of the vehicle body side tube and the wheel side tube.

Abstract: A bicycle comprises front and rear wheels, a frame, a seat post, and a damping member. An upper portion of the seat post is movable relative to the frame between a first position and a second position. The damping member couples the seat post to the frame to dampen movement of the upper portion of the seat post. The damping member can be positioned at least partially in a top tube of the frame. Preferably, the seat post flexes when the upper portion of the seat post moves. The frame further includes a securing location for securing the seat post, and the securing location is a distance from the upper end of the seat tube that is at least 30% of a length of a seat tube. The seat post has a front-to-rear width, and the seat tube has a rear wall spaced from the seat post by a gap that is at least 25% of a front-to-rear width of the seat post.

Abstract: A method for the driver assistance of a road vehicle; the assistance method comprises the steps of: determining an actual steering angle of the front wheels; determining a desired steering angle of the front wheels; and changing the servo-assistance torque applied by a servo-assistance device to a steering system based on the actual steering angle and on the desired steering angle, so that the servo-assistance torque that is applied when a steering wheel is rotated in a first direction to change the actual steering angle causing it to approach the desired steering angle is greater than the servo-assistance torque that is applied when the steering wheel is rotated in a second direction, which is opposite to the first direction, to change the actual steering angle causing it to distance itself from the desired steering angle.

Abstract: Systems and methods for facilitating movement of a patient transport apparatus. The patient transport apparatus has a support structure and a patient support surface. Caster assemblies are coupled to the support structure to roll about a roll axis and swivel about a swivel axis. A control system is configured to control brake mechanisms, steer-lock mechanisms, and pre-swivel mechanisms of the caster assemblies based on one or more inputs.

Abstract: An electrically driven trolley combination for an aircraft cabin with an independently usable, manually movable trolley and an electrical operating apparatus. The trolley has a base section, a main section extending from the base section, and wheels with the trolley supported on a cabin floor by the wheels and manually movable over the cabin floor being pushed or pulled. The electrical operating apparatus can be detachably coupled to the trolley and has a frame, a driveable rolling device on the frame and by which the electrical operating apparatus can be supported on a cabin floor and rolled, a coupling apparatus on the frame for detachably coupling the electrical operating apparatus to the trolley and having an engagement section and a movement section, the engagement section being selectively movable between a first position and a second position by the movement section, an electrical drive device, and a control device.

Abstract: The invention relates to a hydraulic steering device that hydraulically connects a steering cylinder to a supply system, whereby the supply system is hydraulically operatively connectable to the steering cylinder via a steering valve to form a main flow connection and the supply system is hydraulically operatively connectable to the steering cylinder via a flow regulation valve arrangement to form a branch flow connection that circumvents the main flow connection, whereby the flow regulation valve arrangement is triggerable by an electric control unit and the flow regulation valve arrangement comprises valve groups that are triggerable individually, which are respectively connected in the forward flow and return flow of the branch flow connection and a release-shutoff valve is assigned to the flow regulation valve arrangement. It is provided that the release-shutoff valve is connected between the flow regulation valve arrangement and the steering cylinder.

Abstract: An alignment assembly is coupled between a steering assembly and a support foot to maintain an alignment of the support foot with the load transport assembly while the steering mechanism rotates in different steering directions. A biasing device activates in response to non-linear displacements of the load transport assembly relative to the support foot and moves the steering assembly and the support foot back into original alignments with the load transport assembly. The alignment assembly may include a lower main gear assembly that rotates the support foot relative to the steering assembly and an upper main gear assembly that rotates the steering assembly relative to the load transport assembly.